<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
            <title>test javascript</title>
            </head>
    <body>
        <div>
            <!--为什么使用ttf.调用，下面会讲到-->
            <button onclick="external.supercall({cmd:1,data:{a:1}});">点击我然后看xcode的log</button>
        </div>
    </body>
</html>
